The present invention comprises a new class of compounds capable of modulating the c-kit receptor and, accordingly, useful for treatment of c-kit mediated diseases, including various fibrotic and mast cell related diseases such as mastocytosis. The compounds have a general Formula I wherein R1-6, X and Y are defined herein. The invention further comprises pharmaceutical compositions, methods for treatment of c-kit mediated diseases, and intermediates and processes useful for the preparation of compounds of the invention.